He was the Syrian activist who became a symbol of the Assad regime's brutality.

Mazen Al-Hamada was one of tens of thousands detained and tortured after the 2011 uprising against Assad's rule.

When he was released, he fled to Europe and told the world about the horrors he'd endured, including in a documentary called ‘Syria's Disappeared’.

But four years ago he was lured to return back to Syria, where he disappeared, until this week, when he was found dead.

Correspondent: Paraic O'Brien
Video Journalist: Jack Hewson
Producer: Zahra Warsame